William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6435042 | Device and process for installation of encoder receiver transmitter on a gas meter A process and device for installing an encoder receiver transmitter (ERT) (30) onto a gas meter (20) prevents incorrect installation that otherwise requires meter (20) replacement. The device is a guide bracket (10) having a slot (14) for guiding an input... | 08/20/2002 |
| 5789672 | Metering assembly with vapor barrier A water meter has a glass window (30) having an aperture (32) through which extends one or more screw threaded terminals (20) enabling electrical connection to be made to an internal electronic encoder. A resilient grommet (34) is positioned in the apertu... | 08/04/1998 |
| 5421201 | Adapter for connecting an encoder remote transmitter to a gas meter An adapter is provided between a gas meter and an encoder remote transmitter to provide a driving connection from the gas meter output shaft and the encoder drive shaft. The encoder remote transmitter is used to transmit gas meter readings to a remotely l... | 06/06/1995 |
| 5099687 | Electrically neutral flow measurement system An electrical isolation system for monitoring liquid flow rate from pumping equipment housed within a confined enclosure, wherein the flow rate signals are developed into optical signals which are conveyed via fiber optic cables from within the enclosure ... | 03/31/1992 |
| 4539844 | Meter vault cover with externally visible register An improved meter vault cover having a window-like access for externally viewing and reading the internal register of liquid or gas passing through the meter is provided. The improved meter vault cover not only provides the window-like opening but also pr... | 09/10/1985 |
| 4109526 | Turbine meter for bi-directional measurement of fluid flow A multi-bladed turbine meter is in a fluid flow line and has two magnetic pick-ups at the periphery of its blade tips positioned to be pulsed at different times by each blade as each blade passes the pick-ups. A circuit is connected to both pick-ups to de... | 08/29/1978 |
| 3974694 | Remote digital indicator attachment for a gas meter A digital read-out or indicator attachment for a utility meter which features a tensioned, flexible stranded cable connected at one end to a crank driven in rotation by the index of the meter and having an opposite remotely extending end connected to oper... | 08/17/1976 |